Pictures of Patrick Dempsey at the Homestead-Miami Speedway 2011-03-06 07:04:00

Patrick Dempsey got behind the wheel yesterday at the Homestead-Miami Speedway in Florida. The sporty Grey's Anatomy star and former sexiest man alive contender strapped on a helmet and indulged his need for speed during his day at the track. Patrick, who helped raise money for his philanthropic causes at the celebrity-studded event, likes getting physical and he's frequently spotted hopping on his bike for charity rides. Patrick will also have a chance to get back in action on the big screen soon, too, with his role in the upcoming Transformers 3.